Chemistry

actinide - Correct Answers inner transition metal in the bottom of the bottom two rows of the periodic table alkali metal - Correct Answers element in group 1 alkaline earth metal - Correct Answers element in group 2 alpha particle - Correct Answers positively charged particle consisting of two protons and two neutrons anion - Correct Answers negatively charged atom or molecule (contains more electrons than protons) atomic mass - Correct Answers average mass of atoms of an element, expressed in (amu) atomic mass unit (amu) - Correct Answers (also, unified atomic mass unit, u, or Dalton, Da) unit of mass equal to 1/12 of the mass of a Carbon-12 atom atomic mass unit is also known as - Correct Answers unified atomic mass unit (u) or Dalton (Da) atomic number (Z) - Correct Answers number of protons in the nucleus of an atom Avogadro's number - Correct Answers number of representative particles in a mole, 6.02 X 10^23 binary acid - Correct Answers compound that contains hydrogen and one other element, bonded in a way that impacts acidic properties to the compound (ability to release H^+ ions when dissolved in water) binary compound - Correct Answers compound containing two different elements calculate average atomic mass - Correct Answers multiply the mass of each isotope by its natural abundance, expressed as a decimal, and then add the products cation - Correct Answers positively charged atom or molecule (contains fewer electrons than protons) chalcogen - Correct Answers element in group 16 chemical symbol - Correct Answers one, two, or three letter abbreviation used to represent an element or its atoms covalent bond - Correct Answers attractive force between the nuclei of a molecule's atoms and pairs of electrons between the atoms covalent compound - Correct Answers (also, molecular compound) composed of molecules formed by atoms of two or more different elements covalent compound is also known as - Correct Answers molecular compound Dalton (Da) - Correct Answers alternative unit equivalent to atomic mass unit Dalton's atomic theory - Correct Answers set of postulates that established the fundamental properties of atoms Daltons atomic theory postulates - Correct Answers 1) matter composed of atoms